1. ensure that format of the input file is xpt created from SAS.
2. ensure that binary was used if the xpt file was FTP from another host.
3. sample code for reading XPT file to sas:
[code:0dc2f]
libname indt xport 'specified xpt file path and name';
proc copy in=indt out=work;
run;
[/code:0dc2f]